Installation
Information
With each installation of a floor
or staircase, a site visit will occur. A full method statement and risk
assessment will be done on site with a contractor representative with any site
and material requirements also given. A further site visit will be done by a
reputable crane company to determine crane size and access.
When installing hollowcore we use
our “slab grab” (show above), this allows us to place the slabs exactly into
place. This removes the need to bar the slabs along, which can damage the
blockwork.
Each plot will require the
removal of topsoil and any vegetation. Further growth should be inhibited with
weed killer or a membrane. The void below the floor should comply with local
building regulations and ventilated by telescopic void ventilators.
Once the floor has been laid it
then grouted. Beam and block is finished with 1:3 cement/sharp sand grout,
hollowcore is grouted with grade C40 ready-mix concrete. Domestic garages
require a directly bonded screed of minimum strength 21N/mm2 on top of the floor
to allow for concentrated loads, so grouting is not required..
Pre-stressing can cause beams to
camber and this should not exceed L/300 under the requirements of BS 8110. The
effect may be more noticeable on wider spans and self leveling screeds may be
considered where floating floors or non-screeded floors are being used in these
areas.
When fixing at upper floor levels
we can supply our airbag fall prevention system to adhere to HSE “working at
height”
regulations.
